The VEGASON 63 is a loop-powered ultrasonic sensor for continuous level measurement of liquids and solids in virtually all industries.

The PVDF transducer has an integral temperature sensor used to compensate for the change in the speed of sound at different temperatures.

Features

Unaffected by product properties

Adjustment with PLICSCOM, HART handheld or PC

4" compression flange or mounting strap process connection

Key Specifications

-40° to 176°F (-40° to 80°C) operating temperature

24" (610 mm) near zone

Range of 49 ft (15 m) in liquids or 23 ft (7 m) in solids

SIL2 Qualified (IEC 61508/61511 Standards)

Principles of Operation

Pulse

The sensor uses high-performance Piezoelectric crystals to generate short ultrasonic pulses in the form of sound waves. The sound waves are emitted from a transducer that acts as a transmitter/receiver. These pulses are directed toward the surface of the product being measured which reflects the sound waves back to the transducer.

Return to Antenna

The transit time of the reflected pulse is measured by the sensor electronics. The time is used to calculate the distance between the face of the transducer and the product being measured. By simply entering the vessel dimensions, a level-proportional signal can be displayed. It is not necessary to fill or empty the vessel in order to commission the VEGASON.

Measurement

The transit time is converted into a level value for output purposes. Due to the use of high-energy pulses, non-contact measurement of liquids and solids is possible. However, because the ultrasonic sound waves are mechanical energy, the output is most accurate when the composition of the air space between the transducer and product surface remains constant.